TypeError: Cannot read property 'cancel' of null when click on paper-menu-button

[jean-maxime]

Description

When I click on the paper-menu-button and the listbox show, I've got this warnings in the console :

• Couldnt play ( fade-in-animation ). TypeError: Cannot read property 'cancel' of null
• Couldnt play ( paper-menu-grow-width-animation ). TypeError: Cannot read property 'cancel' of null
• Couldnt play ( paper-menu-grow-height-animation ). TypeError: Cannot read property 'cancel' of null

From the file neon-animation-runner-behavior.html:39

Here is the code I use :

<paper-menu-button> <paper-button slot="dropdown-trigger" raised> <custom-icon iconset="head" icon="medium"></custom-icon> <span>Bonjour [[username]]</span> </paper-button> <paper-listbox slot="dropdown-content"> <paper-item on-tap="_goToMyAccount"> <custom-icon iconset="option" icon="normal"></custom-icon> <span>[[localize('page account')]]</span> </paper-item> <paper-item on-tap="_logout"> <custom-icon iconset="deconnexion" icon="normal"></custom-icon> <span>[[localize('label logout')]]</span> </paper-item> </paper-listbox> </paper-menu-button>

Any idea ?

Browsers Affected

• [x ] Chrome
• [x ] Firefox
• [ ] Safari 9
• [ ] Safari 8
• [ ] Safari 7
• [ ] Edge
• [ ] IE 11
• [ ] IE 10

[sandro-k]

@jean-maxime just had the same error when loading web-animations-next-lite.min.js via <script src="../web-animations-js/web-animations-next-lite.min.js"></script> and later on importing via <link rel="import" href="../bower_components/neon-animation/web-animations.html">

[jean-maxime]

If I remember, I'm note importing web animatio next liten and I don't have problems anymore. Try it and tell me if the problem persist

[vrspider]

Hi @sandro-k is your problem solved ?

[sandro-k]

Can be closed